Improvement in sand-papering machines



0. l. FOSTER. vement in Sand-Paperlng Machlnes. Patented Aug. 131, 1872.

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UNITED STATES PATENT OFFICE.

OBRA I. FOSTER, OF SALEM, NEW HAMPSHIRE.

IMPROVEMENT IN SAND-PAPERING MACHlNES.

Specication forming part of Leiters Patent No. 130,420, dated August 13, 1872.

Specification describing a new and useful Improvement in Sand-Papering Machines, invented by ORRA I. FOSTER, of Salem, in the county of Rockingham and State of New Hampshire. l

My invention consists of an arrangement of the fan-blower for carrying the dust away, in connection with the shaft of the sand-paper cylinder, in such manner that the machine may be made cheaper and run with less power than as heretofore made.

Figure lis a horizontal section of my improved machine. Fig. 2 is a sectional elevation taken on the line x of Fig. l.; and Fig. 3 is a horizontal section of a modified form of fan-blower that may be used.

Similar letters of reference indicate corresponding parts.

Arepresents the sand-papering cylinder; B, the driving-wheel; and C, the hood of an Ordinary sand-paperin g machine, to which a fanblower, for drawing the dust away from the Operator and conducting it away, has heretofore been applied, being operated by means of a countershaft and belt, which I have found may be dispensed with by having a prolongation, D, ofthe sand-paper cylinder, or its shaft, within a suitable fan-case, E, and applying the fan-blades F directly thereto, as shown in the drawing. This may be done without regard to the shape of the fan-blades, which may be like those represented in Figs. l and 2, or like those in Fig. 3, or any other; but in practice I nd the blades F arranged parallel withV the axis of the shaft, with a ilange at right angles thereto on the advancing side and next to the sand- 

